const OBJPATH = "/uploads/chris/";	// path of OBJ and MTL 
	const OBJNAME = "CastleOBJ.obj";
	const MTLNAME = "CastleOBJ.mtl";


	const TEXTURE_AGENT 	= '/uploads/starter/pacman.jpg' ;
	const TEXTURE_ENEMY 	= '/uploads/starter/ghost.3.png' ;


	const MUSIC_BACK  = '/uploads/starter/Defense.Line.mp3' ;
	

	const SKYCOLOR 		= 0xa9a9a9 ;				// a number, not a string 
    const LIGHTCOLOR 	= 0xa9a9a9 ;

    			
    const MODELLENGTH 			= 6159;							
    const MODELWIDTH			= 3791; 

    const SCALE_CASTLE			= 0.1;							// scale it by this		 
    const SCALEDMODELLENGTH 	= MODELLENGTH * SCALE_CASTLE;	 			 
    const SCALEDMODELWIDTH	 	= MODELWIDTH  * SCALE_CASTLE;	 			 

    const startRadiusConst 		= SCALEDMODELLENGTH * 0.5 ; 
    const maxRadiusConst 		= SCALEDMODELLENGTH * 10 ;

function loadResources()		// asynchronous file loads - call initScene when finished 
{

	// load castle model OBJ and materials MTL (which reference JPEGs)
	
	var m = new THREE.MTLLoader();
	m.setResourcePath ( OBJPATH );
	m.setPath         ( OBJPATH );
	
	m.load ( MTLNAME, function ( materials ) 
	{
		materials.preload(); 
		var o = new THREE.OBJLoader();
		o.setMaterials ( materials );
		o.setPath ( OBJPATH );
		
		o.load ( OBJNAME, function ( object ) 
		{
			thecastle = object;
			if ( asynchFinished() )	initScene();		 
		});
	});
}

function asynchFinished()		 
{
	if ( thecastle )  return true;  
	else return false;
}

	
function initScene()		
{
	
   	ABWorld.scene.add ( thecastle );
	 
	ABWorld.render();

	console.log ( "Resources loaded." );
	resourcesLoaded = true;
	
	if ( resourcesLoaded && splashClicked ) 
		AB.runReady = true;  		// start run loop 
	
}



// --- score: -----------------------------------

AB.world.newRun = function() 
{
	badsteps = 0;		
	goodsteps = 0;

	ABWorld.init3d ( startRadiusConst, maxRadiusConst, SKYCOLOR  ); 

	// newRun can run behind splash screen 
	// do not start run loop until resources ready AND splash screen is dismissed 
	
	AB.runReady = false; 
	
	loadResources();		// aynch file loads		
							// calls initScene() when it returns 
 
    var thelight = new THREE.DirectionalLight ( 0xffffff, 0.5 );
    thelight.position.set ( startRadiusConst, startRadiusConst, startRadiusConst );
    ABWorld.scene.add(thelight);
		
};